distillation bug

[jasper]

There's a unit conversion error - looking into it.

[aken]

Ok, thank you

[jasper]

The issue is resolved, but to get it to work, you will need to
- download the new ChemSep
- edit the unit to remove the Bottoms Flowrate input variable
- then edit the unit again to add the Bottoms Flowrate input variable; now it will have units

Then hook up the controller. I am attaching the solved problem.